Tag: C# Compiler Errors

C# Error CS8177 – Async methods cannot have by-reference locals

C# Error CS0738 – ‘{0}’ does not implement interface member ‘{1}’. ‘{2}’ cannot implement ‘{1}’ because it does not have the matching return type of ‘{3}’.

C# Error CS0655 – ‘{0}’ is not a valid named attribute argument because it is not a valid attribute parameter type

C# Error CS1703 – Multiple assemblies with equivalent identity have been imported: ‘{0}’ and ‘{1}’. Remove one of the duplicate references.

C# Error CS8130 – Cannot infer the type of implicitly-typed deconstruction variable ‘{0}’.

C# Compiler Error Codes CS1501 to CS2000

C# Error CS1912 – Duplicate initialization of member ‘{0}’

C# Error CS0170 – Use of possibly unassigned field ‘field’

C# Error CS1646 – Keyword, identifier, or string expected after verbatim specifier: @

C# Error CS0441 – ‘class’: a class cannot be both static and sealed

C# Error CS0146 – Circular base class dependency involving ‘class1’ and ‘class2’

C# Error CS1614 – ‘{0}’ is ambiguous between ‘{1}’ and ‘{2}’. Either use ‘@{0}’ or explicitly include the ‘Attribute’ suffix.

C# Error CS1556 – ‘{0}’ specified for Main method must be a non-generic class, record, struct, or interface

C# Error CS0026 – Keyword ‘this’ is not valid in a static property, static method, or static field initializer

C# Error CS1063 – The best overloaded Add method ‘{0}’ for the collection initializer element is obsolete. {1}

C# Error CS1059 – The operand of an increment or decrement operator must be a variable, property or indexer

C# Error CS1942 – The type of the expression in the {0} clause is incorrect. Type inference failed in the call to ‘{1}’.

C# Error CS1665 – Fixed size buffers must have a length greater than zero

C# Error CS0674 – Do not use ‘System.ParamArrayAttribute’. Use the ‘params’ keyword instead.

C# Error CS0077 – The as operator must be used with a reference type or nullable type